Patents by Inventor Donald R. Hull

Donald R. Hull has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4679791
    Abstract: The invention is directed to a set of golf clubs having a plurality of iron type clubs and a plurality of wood type clubs. A first shaft is provided for the iron type clubs and a second shaft is provided for the wood type clubs. The first and second shafts have a first end and a second end. The first shaft has a common length and weight for each of the iron type clubs and the second shaft has a common length and weight for each of the wood type clubs. A grip is positioned on the first end of the first and second shafts. A hosel is positioned on the second end of the first and second shafts. An iron type club head is connected to the hosel positioned on the second end of the first shaft. The iron type club head has a common weight and lie and the iron type club head has a striking face. A wood type club head is connected to the hosel positioned on the second end of the second shaft.
    Type: Grant
    Filed: November 29, 1984
    Date of Patent: July 14, 1987
    Inventor: Donald R. Hull
  • Patent number: 4321808
    Abstract: A method and apparatus for dyeing of yarn in package yarn form wherein a yarn package of a given initial density is compressed axially to a second density and thereafter a metered quantity of a yarn treating agent is introduced into selected portions of the package followed by a diffusing fluid introduced into the said selected portions to diffuse the yarn treating agent into selected portions of the package.
    Type: Grant
    Filed: April 16, 1980
    Date of Patent: March 30, 1982
    Assignee: Glen Head Inc.
    Inventor: Donald R. Hull